Bumper-block.



T. MCMICHIEL.

BUMPER BYLOCK. APPLICATION man MAY I9. 1916.

Patented Nov. 28, 1916.

2 SHEETS-SHEET 1- um/Mom @514 Mama T. McIVHCHlEL.

BUMPER BLOCK.

APPLICATION FILED MAY 19, I916.

Patented Nov. 28, 1916.

2 SHEETS-SHEET 2.

THOMAS MoI/IICZIIEL, OFPUEVIS, MISSISSIPPI.

BUMPER-stock.

Specification of Letters Eatent.

Application filed May 19, 1916. 7 Serial No. 98,612.

To all whom it may concern:

Be it known thatKI, THOMAS MoMrcnmL, a,citizen of the United States,residing at Purvis, in the county of Lamar and State of Mississippi,have invented new and useful Improvements .in Bumper-Blocks, of whichthe following is a specification.

This invention is an improved bumperblock and releasing means thereforfor use on the bolster of a log car or wagon, the object of theinvention being to provide an improved bumper block and means, whichwhen struck by a peavy instantly releases the block and permits theunloading of the logs and without danger to the peavy man or operator.

The invention consistsin the construction, combination and arrangementof devices hereinafter described andclaimed.

In the accompanying drawings :-Figure 1 is an elevation of one end of abolster provided with a bolster block and locking and releasing meansconstructed and arranged in accordance with my invention. Fig. 2 is asimilar view showing the opposite side of the block and its connections.Fig. 3 is a plan of the same. Fig. 1 is an end elevation of the same.Fig. 5 is a detail vertical sectional view of the bumper block. Fig. 6is a detail horizontal sectional view of the same. Fig. 7, is a detailelevation of one of the link arms. Fig. 8 is a similar view of theshackle element. Fig. 9 is a detail perspective view of the locking pin.

The bolster 1 is of the usual construction and the bumper block 2 is ofthe form here shown and is adapted to be arranged on the upper side ofthe bolster, at one end thereof, to retain the logs in place. The bumperblock is provided with a horizontal trans verse slot 3 which extends toand is open at the outer side of the block and the said block is alsoprovided at points above and below said slot with metal straps l, 5respectively and with a vertical groove 6 in its outer side said grooveand straps coacting to receive a split spring locking pin 7 On oppositesides of the bolster are longitudinally curved link arms 8, 9 which arepivotally mounted on a pin 10 that extends through an opening at asuitable distance from said end of the bolster and also extends throughopenings in the link arms. lhe arm 9 is provided at its outer, free endwith a notch 11 and a locking pin 1:2 has one end arranged in said notchand pivotally connected to the link arm 9 by a pin or other pivot 13.Said locking pin is provided near the opposite end with an annularlygrooved portion 1a.

The link arm 8 has a slot 15 in its free outer end to receive thegrooved or reduced portion let of the locking pin and is provided on itsouter side with a shackle element 16 having a curved open slot 17 toreceive the said grooved or reduced portion of the locking pin, saidshackle element also having an operating arm 18 and being pivotallymounted on the link arm 8 by a pivot 19.

A stop shoulder 20 is on the outer side and at the free end of the linkarm 8 and has a notch :21 for engagement by an arm 22 of the shackleelement and said shackle element is normally held in closed position,engaged with the reduced portion of the locking pin, by means of aspring 28.

It will be understood that when the bumper block is thus mounted on thebolster, its slot engaged by the locking pin and free end of the lockingpin held and secured to the arm 8 by the springclosed shackle element,the bumper block is securely fastened on the bolster and hence serves toretain the load of logs in place.

I/Vhen it is desired to release the bumper block and permit thedischarge of the load of logs the split spring pin is first removed fromthe bumper block so that no obstruction will be in the way of thelocking pin. The peavy man or other attendant will then, by means of thepeavy or other suitable implement bear downwardly on the arm of theshackle element thus causing the latter to turn on its pivot against thetension of the spring and in sodoing release the free end of the lockingpin. The pressure of the logs against the inner side of the bumper blockthen forces the bumper block outwardly, the locking pin turning on itspivot in the outer end of the link arm 9 and becoming disengaged fromthe slot and cleared out of the way of the bumper block, the latterbeing forced off the end of the bolster by the pres-v sure of the load,and the logs being discharged as will be understood.

In practice the split spring pin is connected to the arm 9 and preventedfrom being lost by a small chain 24:, as here shown.

Having thus described my invention what I claim is 1. In combinationwith a bolster, a bum- Patented Nov. 255, 1916i.

per block thereon and having a slot in its outer side, a pair of linkarms arranged on opposite sides of the bolster, a locking pin carried byone of the link arms and adapted for arrangement in the slot of theblock and instantaneously releasable means to detachably secure thelocking pin to the other link arm,

2. In combination with a bolster, a bumper block thereon having atransverse slot in its outer side, a pair of link arms pivotally mountedon opposite sides of the bolster, a locking pin pivotally connected toone of the link arms,,adapted for arrangement in the slot of the blockand for detachable engagement With the other link arm, andinstantaneously releasable means on the last named link arm todetachably secure the locking pin to said link arm.

3. In combination With a bolster, a bumper block thereon having atransverse slot in its outer side, a pair of link arms pivotally mountedon opposite sides of the bolster, a locking pin pivotally connected toone of the link arms, adapted for arrangement in the slot of the blockand for detachable engagement With the other link arm, instantaneouslyreleasable means on the last named link arm to detachably secure thelocking pin to said link arm, said instantaneously releasable meansincluding a pivotally mounted shackle element and a spring to normallyhold the same in engaged position.

4. In combination With a bolster, a bumper block thereon, having atransverse slot in its outer side and also provided with a guideextending across said slot, a pair of link elements arranged one on eachside oi the bolster, a locking pin flexibly connected to one linkelement and detaohably connected to the other and adapted forarrangement in the slot of the bumper block, a locking element in andremovable from the guide of the bumper block and instantaneouslyoperable locking means on the last named link element to detachablysecure the locking pin thereto.

In testimony whereof I aiiiX my signature in presence of tWo Witnesses.

THOMAS MGMICHIEL.

Witnesses F. W. DAVIS, ROBERTA SIMMONS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patent-s Washington, D. G.

